| Year | 1943 |
| Date | 20-May |
| Volume | 88 |
| Issue | 2,193 |
| Page | 467 |
| Category | Improving the Two-Stroke |
| Part | |
| Title | Double-Acting Two-stroke Engines |
| Author | Edgar T.Westbury |
| Notes | The Maclagan sliding cylinder double-acting marine two-stroke engine, a reader's experimental engine, a double-acting two-stroke engine by J.B.Price, on testwho originated what - and when? |